5.3.10

"Studies from around the world have reported that men are more jealous of sexual infidelity than emotional infidelity. And women are the opposite—they’re more jealous of emotional cheating than sexual cheating. Experts often lean on an evolutionary cause for this gender difference: Men can never be sure they are the baby-daddy and women are most concerned with securing a genuinely loyal father to care for the children".

Or do they...?

A short article (and 60 second podcast) from Scientific American on a recent study that suggests things may be a little more complicated.